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Pressure
Unit Name Symbol SI Equivalent 
· atmosphere (metric) 
at  9.80665x104 Pa 
· atmosphere (standard) 
atm  1.01325x105 Pa 
· bar 
bar  1x105 Pa 
· barad 
barad  0.1 Pa 
· barye 
  0.1 Pa 
· centiHg (0°C) 
  1333.22 Pa 
· centimeter of mercury (0°C) 
cmHg (0 °C)  1333.22 Pa 
· centimeter of water (4°C) 
cmH2O  98.0638 Pa 
· dyne per square centimeter 
dyn/cm2  0.1 Pa 
· foot of water (4°C) 
ft H2O  2988.98 Pa 
· gigapascal 
GPa  1x109 Pa 
· hectopascal 
hPa  100 Pa 
· inch of mercury (0°C) 
inHg (0 °C)  3386.38 Pa 
· inch of mercury (15.56°C) 
inHg (15.56 °C)  3377.18 Pa 
· inch of water (15.56°C) 
inH2O (15.56 °C)  248.845 Pa 
· inch of water (4°C) 
inH2O (4 °C)  249.082 Pa 
· kilogram force per square centimeter 
kgf/cm2  9.80665x104 Pa 
· kilogram force per square decimeter 
kgf/dm2  980.665 Pa 
· kilogram force per square meter 
kgf/m2  9.80665 Pa 
· kilogram force per square millimeter 
kgf/mm2  9.80665x106 Pa 
· kilopascal 
kPa  1000 Pa 
· kilopound force per square inch 
kip/in2, ksi, KSI  6.89476x106 Pa 
· megapascal 
MPa  1x106 Pa 
· meter of water (15.56°C) 
mH2O, mCE (15.56 °C)  9797.06 Pa 
· meter of water (4°C) 
mH2O, mCE (4 °C)  9806.38 Pa 
· microbar (barye, barrie) 
µbar  0.1 Pa 
· micron of mercury (millitorr) 
µHg (0 °C)  0.133322 Pa 
· millibar 
mbar  100 Pa 
· millimeter of mercury (0°C) 
mmHg, torr, Torr (0 °C)  133.322 Pa 
· millimeter of water (15.56°C) 
mmH2O, mmCE (15.56 °C)  9.79706 Pa 
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